.entrance {
    position: relative;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: url("../../images/entrance/entrancebg.png") no-repeat;
    background-size: 100%;
}
.user {
    position: absolute;
    right: 20px;
    top: 10px;
    height: 54px;
    line-height: 54px;
  }
  .userinfo {
    color: #fff;
  }
  .userpic {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    vertical-align: middle;
    margin-right: 6px;
  }

.logotit {
    position: absolute;
    top: 130px;
    left: calc(50% - 367px);

}

.box {
    position: absolute;
    left: 26%;
    top: 300px;
    text-align: center;
}

.left {
    width: 318px;
    height: 357px;
    background: url("../../images/entrance/eimbg.png") no-repeat;
    background-size: 100%;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    padding-top: 100px;
}

.left.active {
    background: url("../../images/entrance/eimbg-.png") no-repeat;
}

.center {
    width: 318px;
    height: 316px;
    background: url("../../images/entrance/archivebg.png") no-repeat;
    background-size: 100%;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    padding-top: 60px;
}

.center.active {
    background: url("../../images/entrance/archivebg-.png") no-repeat;
}

.right {
    width: 318px;
    height: 357px;
    background: url("../../images/entrance/devopsbg.png") no-repeat;
    background-size: 100%;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    padding-top: 80px;
}

.right.active {
    background: url("../../images/entrance/devopsbg-.png") no-repeat;
}
.left,.center,.right{
    cursor: pointer;
}
.left i,
.center i,
.right i {
    color: #fff;
    font-size: 120px;
}

.left i {
    color: #fff;
    font-size: 100px;
}

.left div,
.center div,
.right div {
    font-size: 30px;
    color: #fff;
}

.circle {
    display: inline-block;
    width: 14px;
    height: 14px;
    background: rgba(64, 157, 240, 0.46);
    border-radius: 50%;
    margin: 0 10px 20px 10px;

}

.circle.active {
    background: rgba(76, 197, 244, 1);
}

.txt1 {
    font-size: 14px;
    font-family: "Microsoft YaHei";
    font-weight: 400;
    line-height: 19px;
    color: #FFFFFF;
}

.txt2 {
    font-size: 12px;
    font-family: Arial;
    font-weight: 400;
    line-height: 20px;
    color: rgba(255, 255, 255, 0.2);
}